Sofa



FIG. 1 is a front perspective view of a sofa showing my new design withan exemplary pillow shown for illustrative purposes only and forming nopart of the claimed design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is another rear perspective view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a first side view thereof;

FIG. 7 is a second side view thereof;

FIG. 8 is a top view thereof;

FIG. 9 is a bottom view thereof;

FIG. 10 is a front perspective view thereof with the sofa in analternate configuration;

FIG. 11 is a rear perspective view thereof;

FIG. 12 is a front view thereof;

FIG. 13 is a rear view thereof;

FIG. 14 is a first side view thereof; and,

FIG. 15 is a second side view thereof.

I claim, the ornamental design for a sofa, as shown and described.